Brake fluid pressure control apparatus

Details Brake fluid pressure control apparatus Brake fluid pressure control apparatus

1995-02-17

1996-04-23

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

3031162, 3031191, 303901, B60T 832

Patent

active

055097308

ABSTRACT:
A brake fluid pressure control apparatus includes a second pump communicating port disposed to face a first pump communicating port approximately perpendicularly to the direction of movement of a spool. The first and second pump communicating ports are connected to a master cylinder, and a check valve is provided between the master cylinder and the first and second pump communicating ports. The check valve is adapted to open when the master cylinder-side brake fluid pressure becomes a predetermined value higher than the pump discharge-side brake fluid pressure. A master cylinder communicating port is provided to extend along the direction of movement of the spool. A cut-off valve is provided between the master cylinder communicating port and the master cylinder. The cut-off valve is closed when the spool is moved to provide communication between the pump communicating ports and a wheel cylinder communicating port.

REFERENCES:
patent: 5290098 (1994-03-01), Burgdorf et al.
patent: 5335982 (1994-08-01), Ando et al.
patent: 5397175 (1995-03-01), Matsunaga et al.
patent: 5403078 (1995-04-01), Farr

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